23230201993 has 2 divisors, whose sum is σ = 23230201994. Its totient is φ = 23230201992.

The previous prime is 23230201991. The next prime is 23230202003. The reversal of 23230201993 is 39910203232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23165753209 + 64448784 = 152203^2 + 8028^2 .

It is a cyclic number.

It is not a de Polignac number, because 23230201993 - 2¹ = 23230201991 is a prime.

Together with 23230201991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23230201991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11615100996 + 11615100997.

It is an arithmetic number, because the mean of its divisors is an integer number (11615100997).

Almost surely, 2^23230201993 is an apocalyptic number.

It is an amenable number.

23230201993 is a deficient number, since it is larger than the sum of its proper divisors (1).

23230201993 is an equidigital number, since it uses as much as digits as its factorization.

23230201993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The spelling of 23230201993 in words is "twenty-three billion, two hundred thirty million, two hundred one thousand, nine hundred ninety-three".